// SPDX-License-Identifier: GPL-2.0 /* Converted from tools/testing/selftests/bpf/verifier/d_path.c */ #include <linux/bpf.h> #include <bpf/bpf_helpers.h> #include "bpf_misc.h" SEC("fentry/dentry_open") __description("d_path accept") __success __retval(0) __naked void d_path_accept(void) { asm volatile (" \ r1 = *(u64 *)(r1 + 0); \ r2 = r10; \ r2 += -8; \ r6 = 0; \ *(u64*)(r2 + 0) = r6; \ r3 = 8 ll; \ call %[bpf_d_path]; \ r0 = 0; \ exit; \ " : : __imm(bpf_d_path) : __clobber_all); } SEC("fentry/d_path") __description("d_path reject") __failure __msg("helper call is not allowed in probe") __naked void d_path_reject(void) { asm volatile (" \ r1 = *(u64 *)(r1 + 0); \ r2 = r10; \ r2 += -8; \ r6 = 0; \ *(u64*)(r2 + 0) = r6; \ r3 = 8 ll; \ call %[bpf_d_path]; \ r0 = 0; \ exit; \ " : : __imm(bpf_d_path) : __clobber_all); } char _license[] SEC("license") = "GPL";